Brake-beam



(No Model.) 5 I W. W. ATTERBURY.

BRAKE BEAM. 4 No. 5455998. v Patented Sept. 10,1895.

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WVILLIAM W. ATTERBURY, OF FORT AYNE, INDIANA.

BRAKE-BEAM.

SPECIFICATION forming part of Letters Patent No. 5d5,998, dated September 10, 1895.

Application filed May 20, 1895- Serial No. 549,853- (No model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM W. ATTER- BURY, a citizen of the United States, residing in Fort Wayne, county of Allen, State of Indiana, have invented a certain new and use ful Improvement in Brake-Beams, of which the following specification is a true and exact description, reference being had to the accompanying drawings, which form a part thereof. My invention relates to the construction of brake-beams, and particularly to that class known as truss brake-beams, my object being to provide a beam of this class of simple, strong, and non-expensive construction.

My invention consists, generally speaking, of the combination with cast-metal terminals or end pieces, the cast-metal strutand the tension member of the beam, of a compression member formed of two angle-irons, secured to the strut and end pieces in a peculiar manner.

. My invention, however, will be best understood as described in connection with the drawings, in which it is illustrated, and in which- Figure 1 is a plan View of my beam; Fig. 2, an enlarged side View of the strut, taken on the section-line 1 1 of Fig. 1; Fig. 3, a side elevation of one of the terminal castings, partly in section. Fig. 4. is a cross-section on line 3 3 of Fig. 2. Fig. 5 is a rear elevation of the beam; Fig. 6, a section on line 2 2 of Fig. 3.

A A are the brake-shoes, which are keyed, as usual, on the terminal castings B. These castings are formed with sockets B of a form adapted to receive, and, so to speak, engage the ends of the angle-iron compression members 0, and I will here note that the angular position of the angle-irons with respect to these castings is not a material matter, save that they should be so disposed as to give clearness to the ends of the rods.

13 indicates the shoulder at the end of each socket B, against which the end of the angleiron abuts.

B is a channel through the casting for the end of the tie-rod E, which is held in place by nuts E E resting against the outside of the casting, as shown.

B is aperforation through the casting to re-- ceive one end of a suspending link F, as indicated in Fig. 3.

D is the strut of the beam, and is formed with an opening D, through which passes the angle-ironsO C, and which should, as shown, conform to the shape of said irons, so as to take a firm hold upon them.

D indicates a recess through which the tierod E passes, D a perforation through which passes the lower end of a suspending-link F, as shown in Fig. 2, and D an oblique hole for the pivot of the power-lever H. (Indicated in dotted lines in Fig. 1.) l

The two angle-irons which are used to make up the compression member are arranged with reference to the other members of the truss, as shown in Figs. 1 to 6that is to say, the sockets BB in the castings B are separated, so that the rod E can pass between them, and while the ends of the angle-irons are thus spread apart their centers are brought close together in passing through the head of the strut D. By my described use of the angleiron compression members, I secure at the same time a strong beam with particularly firm unison between the compression member and the terminal castings, and a torsional flexibility in said compression member which renders harmless the twisting strains due to the frequent bad and unequal adjustment of the shoes on the wheel, and which strains have proved a frequent source'of injury in beams of the truss class.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

A truss brake beam having in combination a compression member made up of two angle irons, shoe holding cast metal terminals 13 13 each having recesses B B to receive and conform to theshape of the ends of the angle ironsrand a channel Bipassing between said recesses or the tie rod ia strut D having an opening D adapted to pass over both angle irons and clamp them together at the center and a tie rod E secured to the terminals B B and passing through or over the end of the strut D.

WILLIAM W. ATTERBUEY.

Witnesses:

JAMES H. FRY,

JAMES E. N. DILLON. 

